Hierarchy/Derived subclasses
| 346 / 74.2 | -> 74.3 |
| -> 74.4 | |
| -> 74.5 | |
| -> 74.6 | |
| -> 74.7 |
uspto searches
Patent Apps in 346/74.2Granted Patents in 346/74.2
Use the links above or do an advanced search in ppubs for:
(346/74.2.ccls. or 346/74.3.ccls. or 346/74.4.ccls. or 346/74.5.ccls. or 346/74.6.ccls. or 346/74.7.ccls.)
This will show what classes derive from the input. Ex: entering 43/42.24 shows the derived classes and the search that can be used to find patents or patent applications in those subclasses.